./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 38e23cbae473b7ebe14c11b45c39448f8cd5228aeb0245c48e1ba9199773a899 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:05:04,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:05:04,360 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:05:04,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:05:04,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:05:04,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:05:04,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:05:04,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:05:04,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:05:04,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:05:04,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:05:04,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:05:04,422 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:05:04,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:05:04,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:05:04,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:05:04,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:05:04,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:05:04,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:05:04,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:05:04,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:05:04,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:05:04,428 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:05:04,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:05:04,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:05:04,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:05:04,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:05:04,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:05:04,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:04,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:05:04,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:05:04,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:05:04,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:05:04,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:05:04,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:05:04,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:05:04,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:05:04,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:05:04,434 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:05:04,434 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e23cbae473b7ebe14c11b45c39448f8cd5228aeb0245c48e1ba9199773a899 [2023-11-06 22:05:04,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:05:04,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:05:04,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:05:04,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:05:04,757 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:05:04,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i [2023-11-06 22:05:07,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:05:08,094 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:05:08,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i [2023-11-06 22:05:08,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/data/706698eb9/b167651cac9d42c5a2be50cbb14f3cfa/FLAGb409a5108 [2023-11-06 22:05:08,121 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/data/706698eb9/b167651cac9d42c5a2be50cbb14f3cfa [2023-11-06 22:05:08,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:05:08,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:05:08,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:08,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:05:08,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:05:08,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce97ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08, skipping insertion in model container [2023-11-06 22:05:08,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,221 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:05:08,409 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i[919,932] [2023-11-06 22:05:08,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:08,518 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:05:08,530 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i[919,932] [2023-11-06 22:05:08,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:05:08,630 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:05:08,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08 WrapperNode [2023-11-06 22:05:08,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:05:08,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:08,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:05:08,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:05:08,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,734 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-06 22:05:08,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:05:08,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:05:08,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:05:08,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:05:08,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:05:08,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:05:08,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:05:08,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:05:08,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (1/1) ... [2023-11-06 22:05:08,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:05:08,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:08,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:05:08,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:05:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:05:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:05:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:05:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:05:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:05:08,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:05:09,037 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:05:09,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:05:09,715 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:05:09,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:05:09,728 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:05:09,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:09 BoogieIcfgContainer [2023-11-06 22:05:09,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:05:09,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:05:09,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:05:09,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:05:09,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:05:08" (1/3) ... [2023-11-06 22:05:09,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99aa6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:09, skipping insertion in model container [2023-11-06 22:05:09,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:05:08" (2/3) ... [2023-11-06 22:05:09,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99aa6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:05:09, skipping insertion in model container [2023-11-06 22:05:09,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:05:09" (3/3) ... [2023-11-06 22:05:09,747 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-56.i [2023-11-06 22:05:09,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:05:09,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:05:09,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:05:09,882 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@eb75798, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:05:09,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:05:09,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-06 22:05:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:05:09,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:09,916 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:09,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:09,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 248301818, now seen corresponding path program 1 times [2023-11-06 22:05:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:09,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529831849] [2023-11-06 22:05:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:09,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:10,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529831849] [2023-11-06 22:05:10,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 22:05:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871799498] [2023-11-06 22:05:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:10,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:10,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:10,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:05:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:10,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:05:10,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-11-06 22:05:10,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871799498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809429540] [2023-11-06 22:05:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:10,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:05:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:10,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:05:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:05:10,688 INFO L87 Difference]: Start difference. First operand has 91 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-06 22:05:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:10,724 INFO L93 Difference]: Finished difference Result 174 states and 306 transitions. [2023-11-06 22:05:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:05:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 194 [2023-11-06 22:05:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:10,735 INFO L225 Difference]: With dead ends: 174 [2023-11-06 22:05:10,735 INFO L226 Difference]: Without dead ends: 86 [2023-11-06 22:05:10,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:05:10,744 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:10,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-06 22:05:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-06 22:05:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-06 22:05:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2023-11-06 22:05:10,811 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 194 [2023-11-06 22:05:10,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:10,811 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2023-11-06 22:05:10,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-06 22:05:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2023-11-06 22:05:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:05:10,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:10,818 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:10,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:11,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:11,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:11,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1678095042, now seen corresponding path program 1 times [2023-11-06 22:05:11,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:11,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418217845] [2023-11-06 22:05:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:11,091 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:11,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087839922] [2023-11-06 22:05:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:11,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:11,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:11,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:11,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:05:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:11,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:05:11,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-06 22:05:11,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:11,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:11,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418217845] [2023-11-06 22:05:11,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:11,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087839922] [2023-11-06 22:05:11,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087839922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:11,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:11,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:05:11,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003350263] [2023-11-06 22:05:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:11,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:11,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:11,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:11,464 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:11,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:11,555 INFO L93 Difference]: Finished difference Result 201 states and 306 transitions. [2023-11-06 22:05:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:11,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 194 [2023-11-06 22:05:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:11,564 INFO L225 Difference]: With dead ends: 201 [2023-11-06 22:05:11,568 INFO L226 Difference]: Without dead ends: 118 [2023-11-06 22:05:11,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:11,571 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 42 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:11,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 250 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-06 22:05:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2023-11-06 22:05:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.358974358974359) internal successors, (106), 79 states have internal predecessors, (106), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 22:05:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 174 transitions. [2023-11-06 22:05:11,604 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 174 transitions. Word has length 194 [2023-11-06 22:05:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:11,607 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 174 transitions. [2023-11-06 22:05:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 174 transitions. [2023-11-06 22:05:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:05:11,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:11,619 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:11,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:05:11,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:11,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:11,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1419929604, now seen corresponding path program 1 times [2023-11-06 22:05:11,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:11,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227889166] [2023-11-06 22:05:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:11,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:11,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383016922] [2023-11-06 22:05:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:11,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:11,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:11,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:11,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:05:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:12,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:05:12,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-06 22:05:12,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:12,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227889166] [2023-11-06 22:05:12,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:12,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383016922] [2023-11-06 22:05:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383016922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:12,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:12,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:05:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48269517] [2023-11-06 22:05:12,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:12,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:05:12,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:05:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:05:12,394 INFO L87 Difference]: Start difference. First operand 115 states and 174 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:12,636 INFO L93 Difference]: Finished difference Result 308 states and 456 transitions. [2023-11-06 22:05:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:05:12,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 194 [2023-11-06 22:05:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:12,641 INFO L225 Difference]: With dead ends: 308 [2023-11-06 22:05:12,641 INFO L226 Difference]: Without dead ends: 196 [2023-11-06 22:05:12,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:05:12,644 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 226 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:12,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 527 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:05:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-06 22:05:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 101. [2023-11-06 22:05:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 68 states have internal predecessors, (89), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-06 22:05:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 149 transitions. [2023-11-06 22:05:12,666 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 149 transitions. Word has length 194 [2023-11-06 22:05:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:12,667 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 149 transitions. [2023-11-06 22:05:12,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 149 transitions. [2023-11-06 22:05:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:05:12,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:12,671 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:12,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:12,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:12,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash -168418298, now seen corresponding path program 1 times [2023-11-06 22:05:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:12,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819221000] [2023-11-06 22:05:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:12,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:12,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567352493] [2023-11-06 22:05:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:12,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:12,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:12,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:12,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:05:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:13,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:13,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-06 22:05:13,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:13,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819221000] [2023-11-06 22:05:13,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567352493] [2023-11-06 22:05:13,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567352493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510671652] [2023-11-06 22:05:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:13,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:13,473 INFO L87 Difference]: Start difference. First operand 101 states and 149 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:13,546 INFO L93 Difference]: Finished difference Result 296 states and 440 transitions. [2023-11-06 22:05:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 194 [2023-11-06 22:05:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:13,553 INFO L225 Difference]: With dead ends: 296 [2023-11-06 22:05:13,553 INFO L226 Difference]: Without dead ends: 198 [2023-11-06 22:05:13,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:13,555 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 29 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:13,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 245 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:13,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-06 22:05:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2023-11-06 22:05:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 131 states have internal predecessors, (172), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-06 22:05:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2023-11-06 22:05:13,610 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 194 [2023-11-06 22:05:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:13,612 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2023-11-06 22:05:13,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2023-11-06 22:05:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:05:13,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:13,616 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:13,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:13,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:13,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1638784322, now seen corresponding path program 1 times [2023-11-06 22:05:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:13,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368831524] [2023-11-06 22:05:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:13,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:13,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117609679] [2023-11-06 22:05:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:13,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:13,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:13,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:13,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:05:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:14,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:05:14,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-11-06 22:05:14,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368831524] [2023-11-06 22:05:14,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:14,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117609679] [2023-11-06 22:05:14,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117609679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:14,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:14,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:05:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88279241] [2023-11-06 22:05:14,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:14,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:14,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:14,393 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:14,425 INFO L93 Difference]: Finished difference Result 385 states and 573 transitions. [2023-11-06 22:05:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:14,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 194 [2023-11-06 22:05:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:14,429 INFO L225 Difference]: With dead ends: 385 [2023-11-06 22:05:14,429 INFO L226 Difference]: Without dead ends: 287 [2023-11-06 22:05:14,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:14,431 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 39 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:14,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 298 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:05:14,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-06 22:05:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2023-11-06 22:05:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 188 states have (on average 1.303191489361702) internal successors, (245), 188 states have internal predecessors, (245), 90 states have call successors, (90), 6 states have call predecessors, (90), 6 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-06 22:05:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 425 transitions. [2023-11-06 22:05:14,471 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 425 transitions. Word has length 194 [2023-11-06 22:05:14,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:14,472 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 425 transitions. [2023-11-06 22:05:14,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2023-11-06 22:05:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 425 transitions. [2023-11-06 22:05:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:05:14,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:14,477 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:14,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:14,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:14,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:14,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1437019878, now seen corresponding path program 1 times [2023-11-06 22:05:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:14,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946174581] [2023-11-06 22:05:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:14,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:14,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393616611] [2023-11-06 22:05:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:14,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:14,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:14,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:14,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:05:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:14,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:05:14,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 437 proven. 75 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2023-11-06 22:05:15,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-06 22:05:15,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946174581] [2023-11-06 22:05:15,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:15,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393616611] [2023-11-06 22:05:15,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393616611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:15,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:15,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:05:15,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776228013] [2023-11-06 22:05:15,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:15,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:05:15,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:05:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:05:15,461 INFO L87 Difference]: Start difference. First operand 285 states and 425 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-06 22:05:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:15,712 INFO L93 Difference]: Finished difference Result 573 states and 841 transitions. [2023-11-06 22:05:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:05:15,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 195 [2023-11-06 22:05:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:15,717 INFO L225 Difference]: With dead ends: 573 [2023-11-06 22:05:15,717 INFO L226 Difference]: Without dead ends: 290 [2023-11-06 22:05:15,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:05:15,721 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 90 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:15,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 209 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:05:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-06 22:05:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2023-11-06 22:05:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 178 states have (on average 1.2415730337078652) internal successors, (221), 178 states have internal predecessors, (221), 90 states have call successors, (90), 9 states have call predecessors, (90), 9 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-06 22:05:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2023-11-06 22:05:15,768 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 195 [2023-11-06 22:05:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:15,772 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2023-11-06 22:05:15,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-06 22:05:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2023-11-06 22:05:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-06 22:05:15,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:15,776 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:15,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:15,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:15,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:15,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:15,984 INFO L85 PathProgramCache]: Analyzing trace with hash 474919073, now seen corresponding path program 1 times [2023-11-06 22:05:15,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:15,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952514177] [2023-11-06 22:05:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:15,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:16,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442219832] [2023-11-06 22:05:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:16,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:16,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:16,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:16,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:05:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:16,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:05:16,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 717 proven. 63 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-11-06 22:05:16,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 24 proven. 63 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-06 22:05:16,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:16,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952514177] [2023-11-06 22:05:16,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:16,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442219832] [2023-11-06 22:05:16,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442219832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:16,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:16,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:05:16,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249861013] [2023-11-06 22:05:16,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:16,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:05:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:05:16,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:05:16,687 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-11-06 22:05:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:16,975 INFO L93 Difference]: Finished difference Result 577 states and 820 transitions. [2023-11-06 22:05:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:05:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 195 [2023-11-06 22:05:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:16,978 INFO L225 Difference]: With dead ends: 577 [2023-11-06 22:05:16,978 INFO L226 Difference]: Without dead ends: 302 [2023-11-06 22:05:16,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:05:16,981 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 104 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:16,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 182 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:05:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-06 22:05:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2023-11-06 22:05:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 187 states have (on average 1.213903743315508) internal successors, (227), 187 states have internal predecessors, (227), 90 states have call successors, (90), 12 states have call predecessors, (90), 12 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-06 22:05:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 407 transitions. [2023-11-06 22:05:17,026 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 407 transitions. Word has length 195 [2023-11-06 22:05:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:17,027 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 407 transitions. [2023-11-06 22:05:17,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 3 states have call successors, (51), 2 states have call predecessors, (51), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2023-11-06 22:05:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 407 transitions. [2023-11-06 22:05:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-06 22:05:17,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:17,030 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:17,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:17,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:17,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:17,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash -913313151, now seen corresponding path program 1 times [2023-11-06 22:05:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:17,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283485475] [2023-11-06 22:05:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:17,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:17,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337453054] [2023-11-06 22:05:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:17,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:17,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:17,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:17,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:05:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:17,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:05:17,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 717 proven. 63 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-11-06 22:05:18,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 24 proven. 63 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2023-11-06 22:05:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283485475] [2023-11-06 22:05:18,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:05:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337453054] [2023-11-06 22:05:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337453054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:18,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-06 22:05:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694747866] [2023-11-06 22:05:18,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:05:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:05:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:05:18,540 INFO L87 Difference]: Start difference. First operand 290 states and 407 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 4 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2023-11-06 22:05:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:05:19,747 INFO L93 Difference]: Finished difference Result 814 states and 1124 transitions. [2023-11-06 22:05:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:05:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 4 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) Word has length 196 [2023-11-06 22:05:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:05:19,752 INFO L225 Difference]: With dead ends: 814 [2023-11-06 22:05:19,753 INFO L226 Difference]: Without dead ends: 527 [2023-11-06 22:05:19,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:05:19,755 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 276 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:05:19,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 385 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 22:05:19,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-06 22:05:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 447. [2023-11-06 22:05:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 288 states have (on average 1.1944444444444444) internal successors, (344), 290 states have internal predecessors, (344), 136 states have call successors, (136), 22 states have call predecessors, (136), 22 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2023-11-06 22:05:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 616 transitions. [2023-11-06 22:05:19,827 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 616 transitions. Word has length 196 [2023-11-06 22:05:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:05:19,828 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 616 transitions. [2023-11-06 22:05:19,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 4 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 4 states have call successors, (60) [2023-11-06 22:05:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 616 transitions. [2023-11-06 22:05:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-06 22:05:19,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:05:19,832 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:19,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:20,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:05:20,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:05:20,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash -856054849, now seen corresponding path program 1 times [2023-11-06 22:05:20,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:20,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926934554] [2023-11-06 22:05:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:20,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:05:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629998318] [2023-11-06 22:05:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:20,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:05:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:05:20,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:05:20,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f576e5-cc65-41e6-bc0d-0e61b568ac29/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:05:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:20,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-06 22:05:20,483 INFO L285 TraceCheckSpWp]: Computing forward predicates...